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11 September 2001 <br /> AGE-NC Project No. 98-0466 <br /> 1 Page 17 of 24 <br /> ' location. A report of findings will be submitted to the CRWQCB follom ing completion of the field <br /> investigation. <br /> 4.1. PREPARATIONS FOR FIELD WORK <br /> ' Prior to conducting field work, the following tasks will be completed: <br /> • Obtain permits from the PHS-EHD for the soil borings. <br /> ' • Mark boring locations a minimum of 48 hours prior to field wo k. <br /> • Notify American Moulding and Millwork, Inc. 48 hours pri, r to field work to obtain <br /> ' clearances for boring locations with regard to underground structures or utility lines. <br /> • Notify PHS-EHD 48 hours prior to commencement of field work to schedule grout <br /> ' inspection. <br /> • Notify CRWQCB 48 hours prior to commencement of field work to schedule inspection. <br /> 1 <br /> 4.2. DRILLING <br /> ' Soil borings will be advanced utilizing a truck-mounted,hollow-stem drill rig and 8-inch diameter <br /> hollow-stem augers.Cuttings generated during drilling will be placed on plastic sheeting and covered <br /> ' with plastic sheeting. Rinseate will be containerized in properly labeled DOT- approved 55-gallon <br /> drums, and stored on-site in an area lacking public access. Disposal alternatives will be evaluated <br /> based on results of soil and water analysis. To properly abandon the soil borings, each boring will <br /> ' be backfilled to surface grade with portland cement utilizing a tremmi pipe. <br /> 4.3. SOIL SAMPLING <br /> ' Numerous shallow soil samples have been previously collected from each of the areas of concern. <br /> AGE proposes collecting soil samples from the proposed hollow-stem auger borings at 5-foot <br /> intervals from surface to total depth.In addition,several discrete soil samples will be collected from <br /> ' the stockpiled soil located near the burn pits and storm water retention pond. <br /> ' 4.3.1 Soil Boring Sample Collection <br /> Soil samples will be collected from the borings utilizing a California split-spoon sampler and brass <br /> ' sleeves. The sampler will be driven by dropping a 140-pound weight from a height of 30 inches <br /> Advanced GeoEnvironmental,Inc. <br />